/**
 * elancom Corporation copy right 2012 - 2015  
 *   
 * $Header: https://192.168.1.224/svn/elancom/product/elancom-platform/trunk/src/main/java/com/elancom/framework/commons/json/parser/deserializer/ArrayListTypeDeserializer.java 1034 2012-07-02 03:09:12Z lanzhouxue $
 * $Id: ArrayListTypeDeserializer.java 1034 2012-07-02 03:09:12Z lanzhouxue $
 * $Author: lanzhouxue $
 * $Date: 2012-07-02 11:09:12 +0800 (Mon, 02 Jul 2012) $
 * $Revision: 1034 $
 */
package com.elancom.framework.commons.json.parser.deserializer;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.LinkedHashSet;

import com.elancom.framework.commons.json.parser.DefaultJSONParser;
import com.elancom.framework.commons.json.parser.JSONToken;

public class ArrayListTypeDeserializer implements ObjectDeserializer {

	private final Type itemType;
	private final Class<?> rawClass;

	public ArrayListTypeDeserializer(Class<?> rawClass, Type itemType) {
		this.rawClass = rawClass;
		this.itemType = itemType;
	}

	@Override
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public <T> T deserialze(DefaultJSONParser parser, Type type, Object fieldName) {
		Collection list = null;

		if (parser.getLexer().token() == JSONToken.NULL) {
			parser.getLexer().nextToken();
		} else {
			if (rawClass.isAssignableFrom(LinkedHashSet.class)) {
				list = new LinkedHashSet();
			} else if (rawClass.isAssignableFrom(HashSet.class)) {
				list = new HashSet();
			} else {
				list = new ArrayList();
			}

			parser.parseArray(itemType, list, fieldName);
		}

		return (T) list;
	}

	@Override
	public int getFastMatchToken() {
		return JSONToken.LBRACKET;
	}

}
